Open Graph is a protocol created by Facebook that controls how web pages appear when shared on social media platforms, using meta tags to define title, description, and preview images. When someone shares a countdown link on Facebook, Twitter, LinkedIn, or messaging apps, Open Graph tags determine what the preview card looks like. Essential OG tags include og:title, og:description, og:image, and og:url. Well-crafted OG tags increase click-through rates from social shares. Why Open Graph Matters: Understanding open graph is essential for anyone working with countdown timers. What Open Graph tags are most important? og:title, og:description, og:image, and og:url are essential. og:type and og:site_name are also recommended. Do Twitter and Facebook use the same tags? Twitter uses its own twitter:card meta tags but falls back to Open Graph tags when Twitter-specific tags aren't present.
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